Depending on where you live that might have been an illegal act so I would just clean up, hose, bleach the evidence, and hose again. Never speak of it!!!
TAKE THE 5TH!
Totally illegal by our house in FL to kill a rattlesnake. Once saw a big one coiled .... just backed up and walked away. Driver should have just left package on drive and left. Maybe text homeowner to warn them of their visitor.
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EDIT: Article hit my feed .......... (big brother) ............. NEBRASKA so it is questionable if it was legal or not???
Protected. Under Federal and State protections. Some species may not be killed as they are of high conservation need while other species have a bag limit of three. Rattlesnakes may be killed if they pose a threat to humans, pets, or livestock.